Governor.



PATENTED MAY 21, 19o?. o. R. CUBE. GOVERNOR. APPL-NATION FILED DEU.26,'1906.

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UNITED STATES PATENT oEEroE. o

CHARLES R. CUDE, OF SAN SABA COUNTY, TEXAS. Y

GOVERNOR.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed December 26, 1906. Serial No. 349,467.

The object of my invention is to Aprovide an improved construction ofgovernor for regulating the speed of engines or motors in general, andthe invention consists of an improved construction of air cylinder whichis adapted to impose a certain amount of work upon the engine by pumpingair into the cylinder, the said cylinder being vented at varyn ingpredetermined pressures, all as will be hereinafter fully described andclaimed.

For a full understanding of the invention and the merits thereof andalso to acquire a knowledge of the details of construction of the meansfor effecting the result, reference is to be had to the followingdescription and accompanying drawings, in which: Figure 1 is a sideelevation of my improved governor cylinder, parts being broken away toshow the interior mechanism, Fig. 2 is a similar view illustrating amodification here- 'inafter specifically referred to.

Referring to the drawing, the numeral 1 designates the cylinder providedat each end with heads 2 that are preferably bolted there- 3 designatesan air inlet pipe which leads from the pump (not shown) that is intendedto be driven by the engine for which my improved cylinder constitutesthe governor.

4 designates a gage pipe which is secured to the cylinder and which isprovided with a T-shaped end 5 of which one arm carries the gage 6 andwhich the other arm carries a vane-capped whistle 7. 7 a designates avalve in such arm of the T-shaped end of the pipe 4, so that the air tothe whistle may be con trolled Aor shut oi'l, as desired.

Within the cylinder 1 are two oppositely acting pistons 8 and 9, therods 10 and 11 of which extend respectively out through pref erablystuffed openings in the heads 2 of the cylinder. A cross-bar 12 issecured to the outer end of each of the rods 10 and 11, and sets ofcoiled springs 13 are secured to the ends of these cross bars and alsosecured at their'inner ends to the cylinder or to the head in anydesired manner. These springs exert tension to draw the piston rods intothe cylnder and move'the two pistons 8 and 9 to ward each other andtoward the middle of the cylinder.

The cylinder is provided with vent cocks 14 which, in the presentinstance and in the embodiment illustrated in 1 are shown' as arrangedin two series, five in each series. The cocks of one series aredesignated A, B, C, D, and E, and the others, A, B, C', D/ and E. Eachone of these vent cocks is provided with a valve intended to be turnedby hand to open and close the cock.

In the practical operation of my improved cylinder governor, the loadimposed upon the `engine to which the cylinder is applied so as togovern the speed thereof may be regulated by means of the various cocks.For instance, if it be desired that the engine run under a very lightload, the vent cocks A, A are open, as the engine operates, it pumps airinto the cylinder and consequently will move the two pistons 8 and 9apart andy outwardly away from each other, against the action of thecoiled springs 13, but as soon as the pistons shall have passed the ventcocks A, A it .is manifest that the air will vent itself and the enginewill not be called upon to work up to any higher pressure. The varyingpressures desired may be readily determined by means of the gage 6, asis evident. Again, if desired, the cocks A, A', B, B', C, C and D, D mayall be closed and the cocks E, E opened. Under these conditions, it ismanifest that a much higher pressure of air will be reached within thecylinder and the engine will have to pump air into the cylinder untilthe pressure is sufficient tomove the away from each other a distance toor beyond the outermost vent cocks E, E. As the air is vented, it isobvious that the coiled springs will exert their tension to move thepistons 8 and 9 toward each other, and it is to be understood that thetension of these springs is resisted at all times by the pressure of airbetween the pistons. By this means the speed of the engine may beregulated and the pistons caused to be held by the air pressure at aboutthe planes of the respective vent cocks, according as these differentcocks are opened, or closed.

ln the modification illustrated in Fig. 6, I use one piston instead oftwo. ln this modified form 1a designates the cylinder which ispreferably arranged upright, 2EL the head thereof, 3a the air inletpipe, 45L the gage pipe, 8at the piston, 10a, the-piston rod, 12, thecross bar secured to said rod, and 13a the pistons 8 and 9 IOO IIO

springs adapted to move said piston rod and piston inwardly ordownwardly within the cylinder. laa designates the series of cocks. Inthis construction, the parts work in a similar manner to the partsembodied in the construction illustrated in Fig. l, except that only onepiston is used instead of two.

Having thus described the invention, what is claimed as new is.

1. In a governor, the combination of an air cylinder provided with anair inlet, and a series of vent cocks, means for opening and closing therespective cocks, a piston mounted to move within the cylinder by thepressure of air therein, a rod secured to said piston, and means securedto said rod for resisting the pressure of air exerted on said piston.

2. In a governor, the combination of an air cylinder provided with anair inlet, and a series of vent cocks, the series extendinglongitudinally of the cylinder, means'for opening and closing therespective cocks, a piston mounted to move in said cylinder by thepressure of air therein, a rod secured to said piston and extending outthrough the head of the cylinder, a cross bar secured to said rod, andcontractile springs secured to said cross bar and to the cylinder andadapted to resist the outward movement of the piston.

3. A governor of the character described, comprising an air cylinderprovided with an air inlet and an air pressure gage and also providedwith a longitudinally extending series of vent 'cocks, means for openingand closing the respective cocks, a piston mounted in said cylinder andmovable by the pressure of air therein, a piston rod secured to saidpiston and extending out through the head of the cylinder, a cross barconnected to said rod, and contractile springs secured to said cross barand said cylinder and adapted to resist the movement of the piston as itis: acted upon by the air pressure. z

In testimony whereof I aiiix my signature in presence of two witnesses.L

CHARLES R. CUDE..

Witnesses:

JOHN E. SonELL, W. M. BURLEsoN.

